.home-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 0;
    overflow-x: hidden;
  }
  
  /* 页面头部 */
  .page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
  }
  
  .page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
  }
  
  .header-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
  }
  
  .main-title {
    margin: 0 0 15px 0;
    font-size: 32px;
    font-weight: bold;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
    line-height: 1.2;
  }
  
  .subtitle {
    margin: 0 0 25px 0;
    font-size: 18px;
    font-weight: 300;
    opacity: 0.95;
    text-shadow: 0 1px 4px rgba(0,0,0,0.2);
  }
  
  .header-decoration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
  }
  
  .decoration-line {
    width: 40px;
    height: 2px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 1px;
  }
  
  .decoration-text {
    font-size: 14px;
    font-style: italic;
    opacity: 0.8;
    color: #e8eaf6;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
  }
  
  /* 主要内容区域 */
  .main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
  }
  
  .departments {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
  }
  
  .department-card {
    width: 100%;
    max-width: 480px;
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
    transition: all 0.3s ease;
    background: white;
  }
  
  .department-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  }
  
  /* 卡片背景 */
  .card-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
  }
  
  .background-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.1;
  }
  
  .background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.95) 0%,
      rgba(248, 249, 255, 0.9) 100%
    );
  }
  
  /* 卡片内容 */
  .card-content {
    position: relative;
    z-index: 2;
    padding: 35px 30px;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 580px;
  }
  
  .card-header {
    margin-bottom: 30px;
  }
  
  .department-name {
    margin: 0 0 15px 0;
    font-size: 24px;
    font-weight: bold;
    color: #333;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  
  .institution-info {
    background: rgba(102, 126, 234, 0.1);
    padding: 10px 20px;
    border-radius: 20px;
    display: inline-block;
  }
  
  .institution-text {
    font-size: 14px;
    color: #667eea;
    font-weight: 600;
  }
  
  /* 二维码区域 */
  .qr-section {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px 0;
  }
  
  .qr-container {
    text-align: center;
  }
  
  .qr-frame {
    position: relative;
    display: inline-block;
    background: white;
    padding: 15px;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.2);
    border: 3px solid transparent;
    background-clip: padding-box;
    margin-bottom: 15px;
  }
  
  .qr-frame::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    z-index: -1;
  }
  
  .qrcode-image {
    width: 180px;
    height: 180px;
    border-radius: 10px;
    display: block;
  }
  
  .qr-label {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  
  .qr-text {
    font-size: 16px;
    font-weight: bold;
    color: #333;
  }
  
  .qr-hint {
    font-size: 12px;
    color: #666;
    opacity: 0.8;
  }
  
  /* 卡片底部 */
  .card-footer {
    margin-top: 30px;
  }
  
  .enter-button {
    width: 100%;
    height: 55px;
    font-size: 18px;
    font-weight: bold;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: none;
    border-radius: 27px;
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 50px;
  }
  
  .enter-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.6);
  }
  
  .button-icon {
    font-size: 20px;
  }
  
  .footer-hint {
    margin-top: 12px;
  }
  
  .hint-text {
    font-size: 13px;
    color: #666;
    font-style: italic;
  }
  
  /* 展览信息 */
  .exhibition-info {
    margin-top: 40px;
  }
  
  .info-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.8);
  }
  
  .info-header {
    margin-bottom: 20px;
    text-align: center;
  }
  
  .info-header h3 {
    margin: 0;
    font-size: 20px;
    font-weight: bold;
    color: #333;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  
  .info-content {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  
  .info-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: linear-gradient(135deg, #f8f9ff, #e8eaf6);
    border-radius: 12px;
    border-left: 4px solid #667eea;
  }
  
  .info-icon {
    font-size: 20px;
    flex-shrink: 0;
  }
  
  .info-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  
  .info-label {
    font-size: 12px;
    color: #666;
    font-weight: 500;
  }
  
  .info-value {
    font-size: 14px;
    color: #333;
    font-weight: bold;
  }
  
  /* 移动端适配 */
  @media (max-width: 768px) {
    .page-header {
      padding: 30px 15px;
    }
    
    .main-title {
      font-size: 24px;
    }
    
    .subtitle {
      font-size: 16px;
    }
    
    .decoration-text {
      font-size: 12px;
    }
    
    .decoration-line {
      width: 30px;
    }
    
    .main-content {
      padding: 30px 15px;
    }
    
    .card-content {
      padding: 25px 20px;
      min-height: 520px;
    }
    
    .department-name {
      font-size: 20px;
    }
    
    .institution-text {
      font-size: 13px;
    }
    
    .qrcode-image {
      width: 150px;
      height: 150px;
    }
    
    .qr-frame {
      padding: 12px;
    }
    
    .enter-button {
      height: 48px;
      font-size: 16px;
    }
    
    .button-icon {
      font-size: 18px;
    }
    
    .info-card {
      padding: 20px;
    }
    
    .info-header h3 {
      font-size: 18px;
    }
    
    .info-item {
      padding: 12px;
    }
    
    .info-icon {
      font-size: 18px;
    }
  }
  
  /* 小屏幕设备 */
  @media (max-width: 480px) {
    .page-header {
      padding: 25px 12px;
    }
    
    .main-title {
      font-size: 20px;
    }
    
    .subtitle {
      font-size: 14px;
    }
    
    .main-content {
      padding: 20px 12px;
    }
    
    .card-content {
      padding: 20px 15px;
      min-height: 480px;
    }
    
    .department-name {
      font-size: 18px;
    }
    
    .qrcode-image {
      width: 130px;
      height: 130px;
    }
    
    .qr-frame {
      padding: 10px;
    }
    
    .enter-button {
      height: 45px;
      font-size: 15px;
    }
    
    .info-card {
      padding: 15px;
    }
    
    .info-item {
      padding: 10px;
      gap: 12px;
    }
    
    .info-details {
      gap: 2px;
    }
    
    .info-label {
      font-size: 11px;
    }
    
    .info-value {
      font-size: 13px;
    }
  }
  
  /* 超小屏幕设备 */
  @media (max-width: 360px) {
    .departments {
      margin-bottom: 30px;
    }
    
    .card-content {
      min-height: 450px;
    }
    
    .qrcode-image {
      width: 120px;
      height: 120px;
    }
    
    .enter-button {
      font-size: 14px;
    }
  }
  
  /* 大屏幕设备 */
  @media (min-width: 1200px) {
    .page-header {
      padding: 60px 20px;
    }
    
    .main-title {
      font-size: 36px;
    }
    
    .subtitle {
      font-size: 20px;
    }
    
    .main-content {
      padding: 60px 20px;
    }
    
    .card-content {
      padding: 40px 35px;
      min-height: 620px;
    }
    
    .qrcode-image {
      width: 200px;
      height: 200px;
    }
    
    .enter-button {
      height: 60px;
      font-size: 19px;
    }
  }
  